M o r tisin g - m a c h in e



(Nmdel) w H ULAPP MORTISING MAGHINE.

Patented Deo. 4, 1888` l l l im E UNITED STATES PATENT EFICE.

i WILLIAM II.A oLAPP, or AUBURN, NEw roi-nt.-

IVIORTISING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 393,817', dated Dezember 4, 1888,

Application filed February 20, 188B. Serial N o. 265,022. (No model.)

To all whom, t may concern,.-

Be it known that l, VILLIAM H. CLAPP, a citizen of the United States, residing at Auburn, in the county of Cayuga and State of New York, have invented a new and useful lvlortising-Nlachine, of which the following is a specification.

My invention relates to improvements in mortising-machines for-cutting the Inortise in window-jambs, wherein is inserted the sashpulley, and at the same time forming the seats for the ends of the sash-p ulley face-plate, whereby the same is secured to the windowjamb; and the object of my invention is to provide means whereby the mortise and seats may be formed at a single operation by means of an ordinary bit-brace.

My improved mortising-machine is especially designed for the forming of the mortise and seats wherein is inserted the so-'called common sense sash pulley, which has a face-plate formed of a-series of disks, each of the same diameter, the end ones being centrally perforated and the middle ones having one common slot, said sash-pulley face-plate being` covered by Letters Patent issued to Anios Halliday, of VeSti'eld,'Massachusetts, assigner, dac., and dated February 10, 1874, being No. 147,322. Y

In the drawings, Figure 1 is an elevation of of Iny invention. Fig. 2 is a section of window-jamb, showing the form of the mortise and seats produced by Iny invention and Fig. 3 is a top plan view of Fig. 1.

A is a metal frame-work having an open space, T, threaded bosses C C and R R at either end, and solid boxes B B B, &c., above and below said open space T of the framework A. In the space T are placed spurgears F F F, &c., of uniform size, said pinions or spur-gears being provided with hubs D D D. Through the hubs and spurgears are passed the shanks of the right-hand spur-bits, G G and H, and the left-hand spur-bits, J J, all of said spur-bits being so adjusted as to cut in each others periphery, and held in such adjustment by means of the set-screws E E E, which are so arranged as not to interfere with each other when the machine is being operated.

The spur-bits J J and H are for forming the mortises J J and H', Fig. 2, and the spur:

bits G G are for forming the seats G' G', in which the end disks of the sash-pulley faceplate are secured, all of said spur-bits being of a diameter to conform to that of the disks of the sash-pulley face-plate.

A', Fig. 2, is a section of the window-jamb, and B is the check-stop slot, which is formed in the window-jamb.

To regulate the depth to which the seats G' G shall be cut, I- provide gage-stops M M, which are extended into threaded shanks U U, which said shanks screw into the threaded bosses C C and are held in any desired adjustment by means of the jam-nuts L L.

To regulate the distance from the checkstop slot to the centerof the Inortise, l prov videvertical guideways N N, through which freely pass spindles OO, said spindles being provided with hubs Q Q, which are of a diameter equal to the width of the check-stop slot B'. The spindles O O are provided, also, with springs P P, which serve to assure the position of the hubs Q Q in the check-stop slot B while the machine is being operated. The vertical guideways N N are extended at right angles thereto into threaded Shanks, which screw into the threaded bosses R R and are secured in any desired adjustment by means of the jam-nuts K K. It will thus be seen that the distance between the center of the hubs Q Q of the freely-moving spindles O O and the center of the mortise in the windowjamb may be adjusted and maintained as the exigencies of the case Inay require. A

Having thus described the several parts of my invention, I will now describe its operation.

The three central bits are adj usted so as to cut. in each others periphery and entirely through the window-jamb. The, two outer bits are adjusted with relation to the vgagestops M M, or vice versa, so as to cut in the periphery of their immediate fellows and sufliciently deep into the jamb of the windowframe to form a seat for the perforated ends of the sash-pulley face-plate. rlhe distance of the center of the mortise from the center of the check-stop slot being regulated as already described, a single line is squared off on the jamb, which represents the center of the longer diameter of the mortise. The hubs Q Q of the spindles O O are placed in the IOO cheek-stop slot, and the point of the bit I l set on the line. The shank ot' the bit 1I being extended into a tapered square t'orm, as shown at S, I place thereon the bit of a common brace and begin the formingoti' the slot in the jamb. As the bits are pressed to their cutting into the jainb, the tension on the spiral springs Vl l is increased, which serves to keep the device from jumping', and assures its proper position. The bits (l G can pass no Farther into the wood than the gage-stops will allow. As the faces of the latter come in contact with the jamb, no further euttingotl the bits (l (l can be performed, and thus, after the mortise has been cut by the three central bits, the seats are formed by the two outer ones and ot' such depth as may be required. ',lhus at a single operation the mortise t'or the sash-pulley box and central disks and the seats for the perforated disks of the sash-pulley tace-plate are neatly and quickly t'ormed.

I claim as my inventionl. The combinatitni ot' a series oi' spur-bits arranged in line and cutting in each others periphery, a frame-work having' a space wherein are placed as many spur-gears ot' equal size provided with hubs, threaded bosses at either end of said trame-work, into which screw the threaded shanks lY ltY ot' the gage-stops )I M, and jam-nuts for securing the saine to a vertical adjustment, as and for the purpose herein described and set forth.

2. The combination of a series ot' spur-bits arranged in line and cutting in each others path, a frame-work having a space wherein are placed as many spur-gears oi' equal size provided with hubs, threaded bosses at; either end oi' said frame-work, into which screw the threaded shanks IT l' oi' the gage-stops M M, jam-nuts for assuring and securingl the vertical adjustment ot' the same, and movablespindles having hubs Q Q, spiral springs l l, threaded shanks at right angles to said spindles, which said shanks screw into threaded bosses R R, with iam-nuts on said threaded shanks l'or assuring and securinga lateral adjustment oi' the same, as and I'or the purpose herein described and set forth.

S. The combination otf tive spur-bits arranged in line in a frame-work constructed as described, the points and width ot said hits correspondingtothe centers and diameters ot' the several disks oi' the sash-pulley face-plate, the shank ot` the central bit extended into a square tapered form, the three central bits t'orming the mortise t'or the box and central disks ol the sash-pulley and face-plate, the two outer bits forming the seats t'or the end disks oi' the sash-pulley face-plate, the movable spindles provided with springs, hubs, jam-nuts, and a threaded shank at right angles thereto, gage-stops provided with threaded shanks and jam-nuts, and spur-gears otl equal size provided with hubs secured to the shanks oi said bits, substantially const rueted as and for the purpose herein speciiicd and described.

WlL'IJAM Il. tLAPl.

\\v it nesses:

WM. A. Gunn, EDU-ini) ENDDEBAK. 

